Vu meter bulbs

[andyrlb]

Any ideas where I could be these in the U.K. at less than £4 EACH !!

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[walpurgis]

Do you know the voltage? If you can't find originals, there are various festoon bulbs for vintage cars and bikes that may do and also prewired LED's that may provide suitable back-lighting.

[andyrlb]

No mate I don’t know the voltage and a schematic doesn’t appear to exist, next step will be the magnifying glass


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[andyrlb]

Nothing written on the bulbs, any ideas ?

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[walpurgis]

if you feel you can do it safely, check the voltage across the bulb terminals with a meter when the amp is fired up. That's what I'd do, not suggesting everybody should try it though.

[andyrlb]

if you feel you can do it safely, check the voltage across the bulb terminals with a meter when the amp is fired up. That's what I'd do, not suggesting everybody should try it though.

I’ll do that now Geoff , nice knowing ya


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[walpurgis]

I expect you'll be back in a flash! :)

[andyrlb]

34.9 volts , can’t be right surely


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[walpurgis]

Seems pretty high. Are you sure the meter is set right?

[andyrlb]

Seems pretty high. Are you sure the meter is set right?

Probably not https://uploads.tapatalk-cdn.com/20190213/c27f7fd7f79ca4180a67704abe97848d.jpg


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[andyrlb]

Probably not https://uploads.tapatalk-cdn.com/20190213/c27f7fd7f79ca4180a67704abe97848d.jpg


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Geoff ! Help !


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[walpurgis]

Use it on the 200v setting.

[andyrlb]

On that setting it’s 35v


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[Firebottle]

Could be a 36V lamp, or if fairly yellow glow (more dull) it could be an under run 48v lamp.

[walpurgis]

Hmm. Maybe that's correct. Higher than I'd expect though.

[andyrlb]

Could be a 36V lamp, or if fairly yellow glow (more dull) it could be an under run 48v lamp.

Cheers Alan, could the fact that they’re installed in a daisy chain way have an effect ?

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[walpurgis]

I reckon you could find festoon bulbs around that voltage. You'd need pretty low wattage though, maybe 1 watt?

[andyrlb]

I reckon you could find festoon bulbs around that voltage. You'd need pretty low wattage though, maybe 1 watt?

Ok mate , I’ll research further


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[walpurgis]

Ah. Didn't realise they were in series.

[andyrlb]

Ah. Didn't realise they were in series.

3x 12v ?


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[andyrlb]

These ....

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[killie99]

Are you sure they're in series? If 1 bulb goes out they all go when in series. If you only have 1 bulb out they aren't in series.

[andyrlb]

Are you sure they're in series? If 1 bulb goes out they all go when in series. If you only have 1 bulb out they aren't in series.

They’re all blown ( poor design)


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[walpurgis]

They’re all blown ( poor design)

Or intended to act as fuses to protect something else? Funny way to do it, but not unheard of.

[andyrlb]

Done it ( ish )

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[andyrlb]

All done now, thanks for the advice chaps [emoji1303]

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